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Home > About USPS & News > Forms & Publications > Postal Periodicals and Publications > Publications > Publication 8A - Address Change Service - Traditional > Address Change Service (ACS): An Intelligent Solution > Features of Address Change Service
Fulfillment files are provided as shown in Exhibit 1 below. On the ACS
application, customers must specify the medium they prefer.
To assist customers without technical assistance or available computer skills,
we offer our CD-ROM (B) media. This product allows customers who have a
computer with a CD-ROM drive to view and print their ACS changes for a
manual update to their files.
Fulfillment files are provided to participating mailers daily, semiweekly,
weekly, semimonthly, or monthly, depending on the fulfillment option and their
needs.
Exhibit 1
ACS Fulfillment File Media Options
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Media Type
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Density
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Record
Length
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Blocksize
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Format
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Internal Label
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Web
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N/A
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427
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N/A
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ASCII
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N/A
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CD-ROM (A)
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N/A
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427
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N/A
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ASCII
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N/A
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CD-ROM (B)
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N/A
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427
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N/A
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ASCII
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N/A
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CD-ROM (A) is a text file only. CD-ROM (B) is a software application for
printing hard copy.
Accompanying the fulfillment file is a shipping notice that lists the number of
notifications provided (notifications are listed by participant code).

The CFS ZIP Coverage File is available to ACS participants at no additional
charge. This file can be queried by your software to determine whether UAA
mail for a particular five-digit ZIP Code™ is processed by a CFS site. Each
data record contains a five-digit ZIP Code, its associated city and state, and a
status flag that indicates the type of UAA processing in that zone. The status
flag can have one of the following values:
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F (Full)
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All UAA Mail from this ZIP Code is fully processed by a CFS site.
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P (Partial)
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Some UAA mail from this ZIP Code is processed by a CFS site.
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M (Manual)
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No UAA mail from this ZIP Code is processed by CFS sites. The mail is forwarded
manually at the originating station.
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I (International Military)
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No UAA mail from this ZIP Code is processed by CFS sites. This is a military
APO/FPO ZIP.
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This file is only available online on the Postal Service's Rapid Information
Bulletin Board System (RIBBS), www.ribbs.usps.gov/files/ACS.
Participants are charged the automated address correction service fee for
ACS fulfillment records as listed in the DMM. Participants are charged the
manual address correction service fee for any manual notifications provided.
Please refer to the DMM for other related fees.

The San Mateo Accounting Service Center sends each ACS participant a
monthly invoice. Payments must be submitted with a copy of the invoice
within 30 days of the invoice date. Invoices carrying outstanding balances
more than 30 days old are charged an annual interest rate of 10 percent.
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